Quick answer: To make your car shine at home: wash it, remove light scratches and swirl marks with a scratch remover, then buff to a gloss. You don't need a detailer for everyday shine.
Step 1 — Wash right
Use clean microfibre and straight strokes so you don't add swirl marks.
Step 2 — Remove scratches & swirls
A little scratch remover on microfibre lifts light scratches and restores gloss — see removing swirl marks.
Step 3 — Protect
Understand your options: ceramic coating vs wax vs polish.
FAQ
Machine needed? No — hand application works for light scratches and everyday shine.